UDF is the FS used on DVDs and also used by DirectCD with packet writing to allow a user to write files one at a time instead of making an ISO with all their files at once. (this works with CDR and CDRW) i'm not 100% but i'm pretty sure this format is also used on the recordable and rewriteable DVD. All standards DVD movies use it. it's required. the ones you can read in beos have an ISO wrapper around them that only points to the data in the UDF portion. i'm also about 98% positive it will be the FS used on Mount Ranier Devices. in other words, by the time OBOS is usuable, this will be the format for recordable/rewritable optical media. it supports "attributes" of sorts built right into the FS as is. i'm sure that their not really efficient if they're constantly modified. but they do exist and the examples given in these documents are for MacOS and MacOS finder. you can find some info here with links to the appropriate standards: http://www.trylinux.com/projects/udf/index.html to my knowledge, DirectCD only supports up to UDF 1.5 currently. the OSTA documentation will detail exactly what values should be written to various fields and what values can be read from them. (i believe it's in addition to the ECMA standard) as of OSTA 2.01 or so BeOS even has it's own Operating System Class. it's number 8 ;) not that it really means anything :P -soco ----- Original Message ----- From: "Keith Poole" <keef@xxxxxxxxxxxxxxx> To: <openbeos@xxxxxxxxxxxxx> Sent: Wednesday, January 09, 2002 11:34 PM Subject: [openbeos] Re: ISO-9660 BFS filesystem extension > UDF? > Keith > > john 'soco' robinson wrote: > > >use UDF. it's supported in most operating systems now > >in some form and supports attributes already. it allows > >drag and drop recording as well and i believe it's used > >in the Mount Ranier stuff. you can add a ISO wrapper > >or other types of wrappers around it for backwards > >compatibility. > > > >it's just not supported in BeOS [yet]... however it'd > >be much better for taking your media elsewhere. > > > >-soco > > > > > > > > > > > > > > >